From patchwork Tue Jul 18 10:17:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [6/9] MIPS: BCM63XX: allow NULL clock for clk_get_rate X-Patchwork-Submitter: Jonas Gorski X-Patchwork-Id: 16776 Message-Id: <20170718101730.2541-7-jonas.gorski@gmail.com> To: unlisted-recipients:; (no To-header on input) Cc: Ralf Baechle , Florian Fainelli , bcm-kernel-feedback-list@broadcom.com, James Hogan , linux-mips@linux-mips.org, linux-kernel@vger.kernel.org Date: Tue, 18 Jul 2017 12:17:27 +0200 From: Jonas Gorski List-Id: linux-mips Make the behaviour of clk_get_rate consistent with common clk's clk_get_rate by accepting NULL clocks as parameter. Some device drivers rely on this, and will cause an OOPS otherwise. Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.") Cc: Ralf Baechle Cc: Florian Fainelli Cc: bcm-kernel-feedback-list@broadcom.com Cc: James Hogan Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Reported-by: Mathias Kresin Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli --- arch/mips/bcm63xx/clk.c | 3 +++ 1 file changed, 3 insertions(+) --- a/arch/mips/bcm63xx/clk.c +++ b/arch/mips/bcm63xx/clk.c @@ -389,6 +389,9 @@ EXPORT_SYMBOL(clk_disable); unsigned long clk_get_rate(struct clk *clk) { + if (!clk) + return 0; + return clk->rate; }